That's according to Joaquin Maroto of Spanish outlet AS (h/t Metro's Sean Kearns), who reported that as part of the deal that brought Ozil to Arsenal from Real Madrid, his former team "have first-refusal on the midfielder if the Gunners accept an offer from a rival Spanish side."

However, Barca are hoping their player exchange can capitalise on a loophole in the clause as Los Blancos "would have to be offered the same deal as their rivals."

As for whether the Gunners would part with one of their best players is another matter entirely, even with three players coming in return.

Turan certainly has much to add to their side, as the 29-year-old is not only an impressive creator but is also well known for his tireless work rate and willingness to track back, which could add some much-needed steel to the squad.

The Turk has only been eligible to play for Barca since the turn of the year and has already made 17 appearances, scoring twice and assisting four times.

Spanish football expert Sergi Dominguez praised his contribution in the Blaugrana's recent 4-0 win over Eibar and noted he is steadily improving after waiting months in order to play:

Sergi Domínguez @FutbolSergi

Impressed with Turan today. Not exactly immense but easily the best game for him with Barça so far. He's getting there.

Like the line-up. Like to see how Munir will do in his natural position as a #9. Doing well recently playing off position.

The 20-year-old is certainly promising but hardly a ready-made replacement for the German.

Sandro is the same age and also capable of playing across the front line, but he hasn't quite made the same impression on the team—he certainly has potential, but he may not be an upgrade on Arsenal's current young options.

If a more effective and experienced player was offered in his place Arsenal might consider the deal, but they'll want to keep their star playmaker for as long as possible.

Ozil himself may not wish to leave the Emirates Stadium either as he recently dismissed speculation he'll leave the Gunners, per Sky Sports News HQ:

While the prospect of joining Barca will likely be tempting for any player, it seems he's determined to stay with Arsenal.

The Gunners are also reportedly nearing an agreement to sign Borussia Monchengladbach star Granit Xhaka, with Sky Sports Germany reporting Arsenal boss Arsene Wenger has met the midfielder's father to discuss a potential deal (h/t Charles Perrin of the Express).

Arsenal have plenty of players in need of replacing in that area—such as Mikel Arteta, Tomas Rosicky and Mathieu Flamini—and rising star Xhaka would make an excellent purchase, as he's sure to attract plenty of attention from the Gunners' European and Premier League rivals.

The 23-year-old has a fantastic future ahead of him, and if that future lies at the Emirates Arsenal will reap the rewards.